参数资料
| 型号： | MAX1945REUI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/19页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK 6A 28TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 两者兼有 |
| 输出数： | 1 |
| 输出电压： | 1.8V，2.5V，可调 |
| 输入电压： | 2.6 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 400kHz ~ 1.2MHz |
| 电流 - 输出： | 6A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.173"，4.40mm 宽）裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 28-TSSOP 裸露焊盘 |
1MHz, 1% Accurate, 6A Internal Switch
Step-Down Regulators
ABSOLUTE MAXIMUM RATINGS
CTL1, CTL2, IN, SYNC, V CC , V DD to GND ...............-0.3V to +6V
SYNCOUT, COMP, FB, FBSEL,
REF to GND ............................................-0.3V to (V CC + 0.3V)
LX Current (Note 1) .....................................................-9A to +9A
BST to LX..................................................................-0.3V to +6V
Continuous Power Dissipation (T A = +85°C)
(derate 23.8mW/°C above +70°C) .............................1191mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PGND to GND .......................................................-0.3V to +0.3V
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1:
LX has internal clamp diodes to PGND and IN. Applications that forward bias these diodes should take care not to exceed
the IC’s package power dissipation limits.
ELECTRICAL CHARACTERISTICS
(V IN = V CC = V CTL1 = V CTL2 = V DD = 3.3V, SYNC = GND, FBSEL = High-Z, V FB = 0.7V, C REF = 0.22μF, T A = 0°C to +85°C , unless
otherwise noted. Typical values are at +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
IN/V CC
Input Voltage
V IN
2.6
5.5
V
IN Supply Current
V CC Supply Current
V DD Supply Current
I IN
I CC
I DD
SYNC = V CC (1MHz),
no load
SYNC = V CC (1MHz)
SYNC = V CC (1MHz)
V IN = 3.3V
V IN = 5.5V
V CC = 3.3V
V CC = 5.5V
V DD = 3.3V
V DD = 5.5V
12
48
2
3
5
10
20
3
8
mA
mA
mA
Total Shutdown Current from IN,
V CC , and V DD
I TOTAL
V IN = V CC = V DD = V BST - V LX = 5.5V,
CTL1 = CTL2 = GND
500
μA
V CC Undervoltage Lockout
Threshold
V UVLO
When LX starts/stops
switching
V CC rising
V CC falling
2.20
2.40
2.35
2.55
V
V DD
V DD Shutdown Supply Current
V IN = V DD = V BST = 5.5V, V LX = 5.5V or 0,
CTL1 = CTL2 = GND
10
μA
BST
BST Shutdown Supply Current
I BST
V IN = V DD = V BST = 5.5V, V LX = 5.5V or 0,
CTL1 = CTL2 = GND
10
μA
REF
REF Voltage
REF Shutdown Resistance
V REF
I REF = 0, V IN = 2.6V to 5.5V
From REF to GND, CTL1 = CTL2 = GND
1.97
2.00
10
2.04
100
V
?
COMP
FBSEL = High-Z
30
55
85
COMP Transconductance
From FB to COMP,
V COMP = 1.25V
FBSEL = GND
FBSEL = V CC
13.3
9.6
24.4
17.6
37.8
27.2
μS
COMP Clamp Voltage Low
COMP Clamp Voltage High
COMP Shutdown Resistance
V LOW_
CLAMP
V HIGH_
CLAMP
V IN = 2.6V to 5.5V, V FB = 0.9V
V IN = 2.6V to 5.5V, V FB = 0.7V
From COMP to GND, CTL1 = CTL2 = GND
0.5
1.90
0.8
2.15
10
1.1
2.40
100
V
V
?
2
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| MAX1945SEUI | 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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